Clutch mechanism



. Dec. 24, 1929. c. w. HOLLINGSWORTH 1,740,735

' CLUTCH MECHANISM Filed Dec. 27; 1927 ATTO R N EY Patented Dec. 24,1929 NETE a CAR-L W. HOLLZNGSW'GRTH, OF IIIARSHALLTG'WN, IQ IIA,ASSIGNOR, BY I'JEESNE ASSIGN- MENTS, TO GLE G. HERM, OF MARSHALLTGWN,IOlVA CLUTCH lEECI-IAIQ'ISM Application filed December 27, 1827.

T 113 invention relates to certain novel improvements in clutch mecianisnis and is particularly directed to a device particularly adaptedfor use in connection with awnings or the like.

The salient object of my invention is to provide a simple andinexpensive device which will be arranged to engage a projecting portionon a movable member so as to stop said movable member in any desirednumber of predetermined points.

Another object of the invention is to arrange a device. of the foregoingcharacter in such a manner that it may be expeditiously released when sodesired.

(Ether objects will appear hereinafter.

The invention consists in the novel OOJblnation and arrangement of partsto be hereinafter described and claimed.

The invention wi l be best understood by reference to the accompanyingdrawings, showing the preferred form of construction and in which:

Fig. 1 is an elevational View depicting a "preferred embodiment of myinvention associated with an awning;

Fig. 2 is a sectional detail View taken substantially on the line 22 onFig. 1;

Fig. 3 is an elevational view depicting a preferred embodiment of myinvention and in which certain parts are broken away;

Fig. 4 is a detail view taken on the line i4i on Fig. 8; and

Fig. is a detail view taken on the line 5-5 on Fig. 3.

1n the drawings, where I have illustrated a preferred embodiment of myinvention, 1 disclose said invention in connection with an awning of thetype employed on automotive vehicles. The embodiment of the inventionillustrated includes brackets 10 and 11 which are adapted to be suitablysecured to the body of the vehicle with which the awnin is associated.The upper portions of the brackets 10 and 11 are inwardly disposed asindicated at 12 and 13 and are adapted to suitably support a curtainroller 14 which includes a spring construction therein adapted to urgesaid roller in a predetermined direction and this construction known inthe Serial No. 242,705.

art as a self *inding roller. Mounted for winding upon the roller 14: isa sheet of material such as canvas which is adapted to provide the bodyportion of the awning. The lower portions of the brackets 10 and 11 areoutwardly disposed as indicated at 16 and 17 and a substantiallyU-shaped member 18 is pivotalimounted in suitable openings provided inthe portions 16 and 17. One end portion of the sheet of material islooped about the bight portion 19 of the member 18. Therefore when saidmember 18 is pivoted about its support, said sheet of material 15 iswithdrawn from the roller 14 in the manner illustrated in dotted linesin Fig. 2 so as to afford protection against the sun or inclementweather.

In order to hold the member 18 and there fore the sheet of material 15in various positions, 1 provide a clutch member which inclut es asubstantially circular cup 20. The bottom 21 of the cup is offset atsubstantially the mid portion thereof as indicated at 22 so as toprovide a passage through which the portion 16 may extend so as toslidably associate the cup 20 with said portion 16. A slot 23 isprovided in the bottom 21 through which the portion 24 of the member 18eX- tends. As best illustrated in Fig. 4 the portion 24 is substantiallyU-shaped and includes a projection 25 which is disposed interiorly ofthe cup 20 the bight portion of said portion 2st extending through anopening 26 in the portion 16 and the slot 23, lb being apparent thatsaid slot 23 is provided in the oii set portion 22. As illustrated bestin Fig. 3 at spaced apart intervals on the rim of the cup 20, lugs 27are struck inwardly. In Fig.

3, three lugs 27 are disclosed but it is to be nderstood that any numbermight be provided dependent upon the number of positions in which it wasdesired to stop the member 18. Under normal conditions the member 18 andthe sheet of material 15 are disposed in the position best illustratedby the full lines in Fig. 2. In order to bring the sheet of materialinto operative position the member from the roller 14 against the actionof the sprin therein. As the member 18 is moved outwardly, theprojection 25 passes over the lugs 27, the end of the member 25 beingtapered as indicated at 28, so as to facilitate this passage. When themember 18 has attained the desired position the user permits the arm 18and therefore the projection 25 to move in the direction of the actionof the spring in the roller 14 and the projection 25 engages the nearestlug 27 and this holds the arm 18 against further movement. When it isdesired to release the projection 25 from the lug 27 the user grips thecup 20 and slides it upwardly along the portion 16 until the lug 27 isdis-engaged from the projection 25 and thus the spring in the roller 14retracts the arm 18 into the full line position of Fig. 2.

It is apparent from the foregoing description that I have provided avery simple and inexpensive clutching device which is arranged such thatthe arm 18 may be stopped in any desired number of positions and I havealso arranged the device in such a manner that the stopping means may bequickly and expeditiously released.

IVhile I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification, without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having thus described my invention what I claim as new and desire toprotect by Letters Patent is:

1. In a device of the class described, a bracket, an arm pivotallymounted on said bracket, a projection on said arm, a member slidablymounted on said bracket, lugs formed on said member atspaced intervals,

means for urging said arm in a predetermined direction, said projectionselectively engaging said lugs to limit movement of said arm.

2. In a device of the class described, a bracket, a cup, a portionofiset from the bottom of said cup providing a passage to slidablyreceive said bracket, an arm pivotally mounted on said bracket having aprojection disposed within said cup, means for urging said arm in agiven direction, lugs formed on the rim of said cup and disposedinteriorly thereof adapted to selectively engage said projection wherebyto limit movement of said arm in said given direction.

8. In a device of the class described, a

jection disposed within said cup, means for urging said arm in a givendirection, lugs formed on the rim of said cup and disposed interiorlythereof adapted to selectively engage said projection whereby to limitmovement of said arm in said given direction, said offset portion havinga slot formed therein through which said arm projects whereby said cupmay he slid along said member to disengage said projection from saidlugs.

4. In a device of the class described, a bracket, an arm pivotallymounted on said bracket, a projection on said arm, a member slidablymounted relative to said projection and said bracket, spaced lugs formedon said slidable member, means for urging said arm in a predetermineddirection, said member being slidably mounted whereby said projectionmay be selectively brought into engagement with said lugs to limit themovement of-said arm in various positions of its movement.

In testimony whereof I afliX my signature.

CARL W. HOLLINGSWORTH.

